Refrigerator



FIG. 1 is a first perspective view of a refrigerator design;

FIG. 2 is a second perspective view of the refrigerator design of FIG. 1;

FIG. 3 is a front view of the refrigerator design of FIG. 1;

FIG. 4 is a first side view of the refrigerator design of FIG. 1;

FIG. 5 is a second side view of the refrigerator design of FIG. 1; and,

FIG. 6 is a top view of the refrigerator design of FIG. 1.

The broken line disclosure represents unclaimed portions of the refrigerator in which the design is embodied. 

CLAIM The ornamental design for a refrigerator, as shown and described. 